The driver uses GENMASK() but does not include <linux/bits.h>. It is good practice to directly include all headers used, it avoids implicit dependencies and spurious breakage if someone rearranges headers and causes the implicit include to vanish. Include the missing header. Reviewed-by: Peter Griffin <peter.griffin@xxxxxxxxxx> Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx> --- drivers/spi/spi-s3c64xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 9882eb0f4bea..b1564a447a6e 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -3,6 +3,7 @@ // Copyright (c) 2009 Samsung Electronics Co., Ltd. // Jaswinder Singh <jassi.brar@xxxxxxxxxxx> +#include <linux/bits.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/dma-mapping.h> -- 2.43.0.687.g38aa6559b0-goog
